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Ricoh

GR IIIx HDF

GR IIIx variant with built-in Highlight Diffusion Filter and a 40mm equivalent lens for softer street photography rendering.

$1,146

Launch price

Released Apr 2024

vs
GR IV

Ricoh

GR IV

Latest GR with 25.74MP APS-C sensor, 28mm equivalent lens, 5-axis SR, 53GB internal memory, and pocket street-camera handling.

$1,499

Launch price

Released Jan 2026

GR IV is 1.8 years newer.

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Wins

0categories

GR IIIx HDF

PortraitVlogging

Wins

3categories

GR IV

PortraitVlogging

8 categories tied

Which would you choose?

TL;DR — Key differences

GR IIIx HDF wins 0 categories·GR IV wins 3 categories
  • BGR IV has higher ISO max (native) (204,800 vs 102,400)
  • BGR IV has higher Battery life (CIPA) (250 shots vs 200 shots)
  • BGR IV has higher Resolution (25.74 MP vs 24.24 MP)

Key specs at a glance

GR IIIx HDFGR IV
Resolution24.24 MP25.74 MP
SensorAPS-CAPS-C
ISO max102,400204,800
Burst4 fps4 fps
4K60 fps60 fps
IBISYesYes
Weight262 g262 g
Battery200 shots250 shots

Size and weight, to scale

GR IIIx HDF

109 × 62 × 35 mm

262 g (0.58 lb / 9.24 oz)

Credit card shown to scale as a size reference (ISO 7810, 85.6 × 54 mm)

Credit card

85.6 × 54 mm

for scale

GR IV front view

GR IV

109 × 61 × 33 mm

262 g (0.58 lb / 9.24 oz)

GR IIIx HDF is 1mm taller and 3mm thicker than GR IV.

GR IIIx HDF and GR IV weigh the same.

Depth (front-to-back): 35mm GR IIIx HDF · 33mm GR IV

Back view, to scale

Width × Height — same proportions as the front of the body.

GR IIIx HDF

109 × 62 mm

Credit card shown to scale as a size reference (ISO 7810, 85.6 × 54 mm)

Credit card

85.6 × 54 mm

GR IV back view

GR IV

109 × 61 mm

Top view, to scale

Width × Depth (front-to-back) — see which body is chunkier on the table.

GR IIIx HDF

109 × 35 mm

Credit card shown to scale as a size reference (ISO 7810, 85.6 × 54 mm)

Credit card

85.6 × 54 mm

GR IV top view

GR IV

109 × 33 mm

Sensor size, to scale

GR IIIx HDF

23.5 × 15.6 mm · APS-C

367 mm² area

GR IV

23.3 × 15.5 mm · APS-C

361 mm² area

Use-case scoring

Which one for what?

Algorithmic scores from verified specs · 10 = best in class

Use caseGR IIIx HDFGR IV
Portrait
6.5Good
6.5Good
Sports & Action
1.5Limited
1.5Limited
Video & Hybrid
3.5Limited
3.5Limited
Landscape
2.5Limited
2.5Limited
Travel
5.5Fair
5.5Fair
Wildlife
2.0Limited✓ wins
1.0Limited
Vlogging
6.5Good
6.5Good

Why pick one over the other

Reasons to choose

GR IIIx HDF

  • Card types

    Adds SD, SDHC, SDXC UHS-I

  • Dimensions (W×H×D mm)

    Adds 61.9, 35.2

Reasons to choose

GR IV

  • Card types

    Adds microSD, microSDHC, microSDXC UHS-I

  • Dimensions (W×H×D mm)

    Adds 61.1, 32.7

  • ISO max (native)

    204,800 vs 102,400 — higher is better

  • Battery life (CIPA)

    250 shots vs 200 shots — higher is better

  • Resolution

    25.74 MP vs 24.24 MP — higher is better

Both cameras share

  • ISO min (native)Both 100
  • AF points / zonesBoth 49
  • Eye AFBoth support eye af
  • Burst (mechanical)Both 4 fps
  • Burst (electronic)Both 4 fps
  • 4K max frame rateBoth 60 fps

Pros & cons at a glance

Editorially curated highlights and trade-offs.

GR IIIx HDF

Pros

  • Built-in HDF effect
  • 40mm equivalent GR lens
  • Pocketable APS-C
  • 3-axis SR

Cons

  • No ND filter
  • Fixed lens
  • Full HD video only

GR IV

Pros

  • 25.74MP APS-C sensor
  • 5-axis sensor-shift SR
  • 53GB internal memory
  • Pocketable 28mm GR lens

Cons

  • Fixed lens
  • No built-in EVF
  • Full HD video only

Decided which one is right for you?

Compare live prices for the GR IIIx HDF and GR IV at major authorized retailers.

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Full specifications

= category winner

GR IIIx HDF
GR IV
Resolution
24.24 MP
25.74 MP+6%
Sensor type
APS-C CMOS
APS-C CMOS
Sensor size
23.5 x 15.6 mm
23.3 x 15.5 mm
AA filter
No
No
GR IIIx HDF
GR IV
Aperture
F2.8-F16
F2.8-F16
Focal length (35mm equiv.)
40 mm
28 mm
GR IIIx HDF
GR IV
Processor
GR ENGINE 6
GR ENGINE 7
GR IIIx HDF
GR IV
ISO min (native)
100
100
ISO max (native)
102,400
204,800+1 stop
ISO max (expanded)
102,400
204,800
GR IIIx HDF
GR IV
Shutter type
Leaf shutter
Leaf shutter
Max mechanical speed
1/4000 sec
1/4000 sec
Max electronic speed
1/16000 sec

Frequently asked

Quick answers generated from verified specs.

Which is better for portraits, GR IIIx HDF or GR IV?

GR IIIx HDF scores 6.5/10 versus 6.5/10 for GR IV — 24.24MP — solid resolution.

What's the resolution difference between the GR IIIx HDF and GR IV?

GR IIIx HDF is 24.24 MP and GR IV is 25.74 MP, so the GR IV captures more detail for cropping and large prints.

Do the GR IIIx HDF and GR IV have in-body image stabilization?

GR IIIx HDF has in-body image stabilization, while GR IV has in-body image stabilization.

Which shoots faster bursts — the GR IIIx HDF or the GR IV?

GR IIIx HDF reaches 4 fps electronic. GR IV reaches 4 fps electronic.

What's the weight difference between the GR IIIx HDF and GR IV?

Both bodies weigh roughly 262 g.

Do the GR IIIx HDF and GR IV record 4K video?

GR IIIx HDF: 4K up to 60p. GR IV: 4K up to 60p.

Are the GR IIIx HDF and GR IV weather sealed?

GR IIIx HDF: No. GR IV: No.

Which has better battery life?

Rated battery life is 200 shots (CIPA) for the GR IIIx HDF and 250 shots for the GR IV, giving the GR IV the edge.

How much does each cost?

GR IIIx HDF launched at $1,146 and GR IV at $1,499. The GR IIIx HDF is $353 less.

Can't decide between two? Compare a third camera.

Add any camera to get a three-way GR IIIx HDF vs GR IV vs X comparison.

Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.

Product images courtesy of Ricoh press materials.